Specular(rgb) map and emissive(rgb) map on my shader

Hi everybody,
I'm trying to add a specular map on my modified ToonShader based on rgb,
so if I put a rainbow map on specular my mesh will shine multicolored !

Here my script (specular doesnt working ...)

Code (CSharp):

1. Properties {
2.         _Color ("Main Color", Color) = (0.5,0.5,0.5,1)
3.         _MainTex ("Base (RGB)", 2D) = "white" {}
4.         _BumpMap ("Normalmap", 2D) = "bump" {}
5.         _SpecMap ("Spec map (RGB)", 2D) = "black" {}
6.         _Shininess ("Shininess", Range (0.03, 1)) = 0.078125
7.         _Ramp ("Toon Ramp (RGB)", 2D) = "gray" {}
8.         _CutOff("Cut off", float) = 0.0
9.     }
10.     SubShader {
11.         Tags { "RenderType"="Opaque" }
12.      
13.         Cull Off
14.      
15. CGPROGRAM
16. #pragma surface surf ToonRamp
17. sampler2D _Ramp;
18. // custom lighting function that uses a texture ramp based
19. // on angle between light direction and normal
20. #pragma lighting ToonRamp exclude_path:prepass
21. inline half4 LightingToonRamp (SurfaceOutput s, half3 lightDir, half atten)
22. {
23.     #ifndef USING_DIRECTIONAL_LIGHT
24.     lightDir = normalize(lightDir);
25.     #endif
26.  
27.     half d = dot (s.Normal, lightDir)*0.5 + 0.5;
28.     half3 ramp = tex2D (_Ramp, float2(d,d)).rgb;
29.  
30.     half4 c;
31.     c.rgb = s.Albedo * _LightColor0.rgb * ramp * (atten * 2);
32.     c.a = 0;
33.     return c;
34. }
35. sampler2D _MainTex;
36. sampler2D _BumpMap;
37. sampler2D _SpecMap;
38. float4 _Color;
39. half _Shininess;
40. float _CutOff;
41. struct Input {
42.     float2 uv_MainTex : TEXCOORD0;
43. };
44. void surf (Input IN, inout SurfaceOutput o) {
45.     half4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
46.     half4 s = tex2D(_SpecMap, IN.uv_MainTex);
47.     if(c.a < _CutOff) discard;
48.     o.Albedo = c.rgb;
49.     o.Specular = s.rgb * _Shininess;
50.     o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_MainTex));
51.     o.Alpha = c.a;
52. }
53. ENDCG
54.     }
55.     Fallback "Diffuse"
56. }

Then after that, I would be able to put an emissive map too !

Anyone can help ?
Thx in advance !!

 

Because your custom light function doesn't use specular. Usually Unity's lighting functions handle the specular color and emission color, but since you're using a custom one you have to implement that yourself.

In the case of emission, that's easy. Just add your emission map, set it to o.Emissive, then c.rgb += s.Emissive; in the light function.

Specular is a little harder since you actually have to decide how you want that to work for your toon shader. In a normal blinn-phong you would be using pow() on a half angle dot product to create the specular highlight and multiplying that by your specular color, but I have no idea what look you want.

 

Ok ... So for emissive I think I can do it, but for specular, I don't did the toon part and I'm a big beginner in shaders ...
Can you give me an exemple to set the specMap ?